12 51 235 Removing and installing/replacing engine sensor system module 1 wiring harness (N20)
WARNING: This page is about a different variant/trim than selected.
IMPORTANT:
Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION)
.
Necessary preliminary tasks:
- Read out the fault memory of the DME control unit.
- Switch off ignition.
- Remove intake PLENUM .
Overview, engine sensor system wiring harness module 1.
| Unlock and disconnect following connectors and lines | |
|---|---|
| Unlock connector from suction pressure sensor on the intake plenum and disconnect | |
| Unlock connector from suction pressure sensor on the pressure pipe and disconnect | |
| Unlock connector on throttle body and disconnect | |
| Unlock connector on oil level sensor and disconnect | |
| Unlock connector on zero-gear sensor and disconnect | Manual gearbox only |
| Unlock connector on hydraulic valve and disconnect | |
| Unlock connector on crankshaft sensor and disconnect | |
| Unlock connector on high-pressure fuel sensor and disconnect | |
| Unlock connector on oxygen sensor and disconnect | |
| Unlock connector on both knock sensors and disconnect | |
| Unlock connector on monitoring sensor and disconnect | |
| Unlock connector on high pressure pump and disconnect | |
| Unlock connector on pressure converter and disconnect |
Release wiring harness if necessary from existing clips and clamps.
Feed out wiring harness and remove.
Installation note:
Check wiring harness installation arrangement.
Check plug connections for correct fit.
Check stored fault message.
Clear diagnostic fault entries from fault memory.